Furnace Prices in Ontario: Real Costs, Installation & Rebates Explained

Introduction

⚠️ Emergency Replacement? If your furnace failed unexpectedly, prioritize safety and heat restoration first—then use this guide to understand fair pricing and avoid rushed decisions.

Quick answer: Furnace prices in Ontario range from $2,500–$7,500+ for the unit alone, and $4,000–$10,000 installed — most homeowners pay $4,500–$7,000 for a mid-to-high-efficiency gas system. Already replacing your AC too? A combined furnace + AC installation in Ontario typically runs $7,000–$15,000.

✅ Licensed & TSSA-certified contractor network • 📋 Based on real 2026 Ontario installer quotes • 💬 Free, no-obligation estimates

A new furnace unit in Ontario costs $2,500 to $7,500+, and most homeowners pay $4,000 to $10,000 total once installation is included — typically landing around $4,500–$7,000 for a mid-to-high-efficiency gas system. The exact number depends on fuel type, AFUE efficiency rating, home size, and whether your ductwork needs modification. This guide breaks down real 2026 pricing by fuel type, installation cost, available rebates, and how Ontario’s climate affects your decision between a furnace and a heat pump.

In this guide, you’ll learn the real costs of furnace units across Ontario, what drives pricing differences, installation expenses, available rebates, and how to compare quotes from local contractors. By the end, you’ll have a clear picture of what your new furnace cost in Ontario with installation will actually be—and how to maximize value without overpaying.

Looking for pricing specific to your city? See our local guides for Hamilton, Kitchener, Milton, and Cambridge.

How Much Does a Furnace Cost in Ontario?

New furnace costs in Ontario vary significantly based on fuel type, efficiency rating, and brand. Here’s a realistic breakdown of what homeowners in Toronto, Ottawa, Hamilton, and the GTA typically pay:

Gas Furnaces

Gas furnaces remain the most popular choice in Ontario due to natural gas availability and operating cost efficiency.

• Standard Efficiency (80% AFUE): $2,500–$3,800
• Mid-Efficiency (90–95% AFUE): $3,500–$5,200
• High-Efficiency (96%+ AFUE): $4,500–$7,500+

High-efficiency furnace Ontario prices are higher upfront but deliver long-term savings on energy bills throughout the heating season.

Electric Furnaces

Homes without natural gas access — or those in smaller spaces — often turn to electric furnaces in Ontario.

• Standard Electric Furnace: $1,800–$3,500
• High-Efficiency Electric Models: $3,000–$5,000

While installation is often simpler, electricity costs in Ontario make these units more expensive to operate annually compared to gas.

Oil Furnaces

Fewer Ontario homes install oil furnaces today, though rural properties still commonly rely on them.

• Standard Oil Furnace: $3,200–$5,500
• High-Efficiency Oil Models: $4,800–$7,200

Fuel prices fluctuate with these systems, and they require regular maintenance plus scheduled deliveries, which adds to long-term costs.

Furnace Cost by Home Size

Home Size	Recommended BTU Range	Typical Installed Cost
Under 1,200 sq ft	40,000–60,000 BTU	$3,500–$5,500
1,200–2,000 sq ft	60,000–80,000 BTU	$4,500–$7,000
2,000–3,000 sq ft	80,000–100,000 BTU	$5,500–$8,500
3,000+ sq ft	100,000+ BTU	$6,500–$10,000+

Ontario Furnace Cost Comparison Table

Fuel Type	Upfront Cost Range	Annual Operating Cost	Best For
Gas (High-Efficiency)	$4,500–$7,500	$800–$1,200	Most Ontario homes
Gas (Standard)	$2,500–$3,800	$1,100–$1,500	Budget-conscious buyers
Electric	$1,800–$5,000	$1,400–$2,200	No gas access areas
Oil	$3,200–$7,200	$1,600–$2,400	Rural properties

Ontario Homeowner Tip: Natural gas furnaces offer the best value for most GTA and urban Ontario homeowners when factoring in both installation and 15-year operating costs.

Furnace + AC Combined Installation Cost in Ontario

If you’re replacing an aging air conditioner alongside your furnace, bundling both installs with one contractor visit is usually the better move. A combined furnace and AC installation in Ontario typically runs $7,000–$15,000 depending on efficiency tier and home size — often $500–$1,500 less than booking two separate service calls, since labor, permits, and electrical work overlap.

• Standard furnace + standard AC: $7,000–$9,500
• High-efficiency furnace + high-efficiency AC: $10,000–$15,000+

Combined replacements can also unlock larger rebate bundles under Ontario’s Home Renovation Savings™ program. Ask your contractor to quote furnace-only, AC-only, and combined pricing side by side before deciding.

Estimate your own monthly and annual costs with our operating cost calculator.

What Does Furnace Installation Actually Cost in Ontario?

The furnace unit itself is only part of the total furnace installation cost in Ontario. Labor, materials, and system modifications significantly impact your final bill.

Typical Installation Costs

• Labor (Standard Install): $1,200–$2,500
• Complex Install (ductwork, venting modifications): $2,500–$4,500+
• Removal of Old Furnace: $150–$400
• Permits & Inspections: $100–$300

What Affects Installation Price

Home Size: Larger homes require higher-capacity furnaces and more extensive ductwork, increasing both equipment and labor costs.

Existing Infrastructure: Older homes may need ductwork repairs, electrical upgrades, or venting changes to accommodate modern high-efficiency systems that meet Ontario building code requirements.

Fuel Type Conversion: Switching from oil to gas or electric to gas requires new gas lines, venting, and permits—adding $1,500–$3,500 to the project.

Brand & Warranty: Premium brands like Carrier, Lennox, and Trane often include extended warranties but come with higher upfront costs. Mid-tier brands like Goodman and Bryant offer solid performance at 15–20% lower prices with comparable reliability.

Seasonal Demand: Installation rates tend to rise during peak heating season (October–January). Scheduling off-season can sometimes reduce labor costs by 10–15%.

Contractor Licensing: Always verify your contractor is TSSA-certified (Technical Standards and Safety Authority) to ensure compliance with Ontario safety regulations and valid warranties.

Not sure what size furnace you need? Try our free furnace size calculator to get a quick BTU estimate, or request quotes with professional heat load calculations to avoid costly oversizing mistakes.

What Is AFUE and Why Does It Affect Furnace Price?

Annual Fuel Utilization Efficiency (AFUE) measures how much fuel converts to usable heat. This single number dramatically affects both upfront costs and long-term savings. The EnerGuide rating system helps Canadian homeowners compare furnace efficiency across brands and models.

How AFUE Works:

• 80% AFUE = 20% of fuel escapes as waste heat
• 95% AFUE = Only 5% waste, 95% becomes home heating
• 98% AFUE = Maximum efficiency available

Ontario Climate Consideration: With heating seasons running October through April, high-efficiency furnaces (95%+ AFUE) typically pay for themselves within 5–7 years through reduced natural gas consumption. According to Natural Resources Canada, upgrading from 80% to 95% AFUE can save Ontario homeowners $300–$500 annually.

Ontario-Specific Rebates and Incentives

Ontario homeowners can access rebate programs to offset furnace replacement costs see our full Ontario furnace rebates guide for program-by-program details.

Enbridge Gas's previous furnace-specific rebate (Home Efficiency Rebate Plus) closed to new applicants in February 2024, as did the Canada Greener Homes Grant. Both have largely been replaced by the Home Renovation Savings™ program, which now leans toward insulation, heat pump upgrades, smart thermostats, and windows/doors rather than furnace-specific rebates. Furnace eligibility isn't guaranteed under the current program always confirm current amounts directly at homerenovationsavings.ca or with Natural Resources Canada before budgeting for one.

Some Ontario municipalities (Toronto, Ottawa, Hamilton) occasionally run additional seasonal incentives — check with your local utility provider or municipality for region-specific programs.

Furnace vs. Heat Pump in Ontario: Which Should You Choose?

Quick answer: For most Ontario homes, a gas furnace remains the lower-upfront-cost, more reliable choice in extreme cold, while a cold-climate heat pump costs more to install but qualifies for significantly larger rebates and cuts long-term operating costs — especially when paired with a furnace in a hybrid system.

	Gas Furnace	Cold-Climate Heat Pump
Upfront installed cost	$2,500–$7,500	$7,500–$18,000+
Performance below -15°C	Consistent, no drop-off	Reduced efficiency; often needs backup heat
Ontario rebates available	Up to $250 (Enbridge)	Up to $7,500+ (combined federal/provincial)
Annual operating cost (2,000 sq ft home)	$800–$1,500	Varies by electricity rate; can be lower with high COP
Lifespan	15–20 years	10–15 years

Why Ontario's Climate Changes the Calculation

Why this matters for Ontario homeowners specifically: Ontario's climate creates a genuine trade-off that doesn't exist in milder provinces. A furnace delivers steady heat output regardless of outdoor temperature, while even cold-climate heat pumps see efficiency drop as temperatures fall toward -20°C. This is why many Ontario HVAC contractors now recommend hybrid (dual-fuel) systems — a heat pump handles heating down to roughly -10°C to -15°C, with the furnace automatically taking over during extreme cold snaps. This setup lets homeowners capture the larger heat pump rebates while keeping furnace reliability as backup. For a deeper side-by-side breakdown, see our full furnace vs. heat pump comparison guide.

Furnace-Only vs. Hybrid: Which Fits Your Home?

When a furnace alone still makes sense: Older homes without central air infrastructure, homes on a tight upfront budget, or homes in colder northern/rural Ontario regions where heat pump performance drops off more before backup heat kicks in.

When to seriously consider a heat pump or hybrid: If you're already replacing both a furnace and an aging air conditioner, the combined rebate value often closes most of the price gap — ask any contractor you quote to run both scenarios side by side.

What Factors Change Your Final Furnace Quote?

Several factors determine the final cost of your furnace replacement:

Fuel Type

Gas furnaces typically offer the best balance of upfront cost and operating efficiency in Ontario. Electric furnaces have lower installation costs but higher monthly bills. Oil furnaces are costly to run and maintain.

Home Size & Heating Load

Furnace capacity is measured in BTUs (British Thermal Units). Ontario homes typically need 40–60 BTUs per square foot, depending on insulation quality, window efficiency, and layout — use our BTU calculator to get an estimate specific to your home.

depending on insulation quality, window efficiency, and layout. A 2,000 sq ft home in the GTA generally requires a 60,000–80,000 BTU furnace.

Proper sizing requires a Manual J heat load calculation performed by TSSA-certified contractors—not guesswork based on your old furnace.

Brand Comparison

Premium Tier (Carrier, Lennox, Trane):

• Cost: 20–30% higher
• Warranty: 10–12 years parts, lifetime heat exchanger
• Best for: Long-term homeowners prioritizing reliability

Mid-Tier (Bryant, American Standard, Goodman):

• Cost: 15–20% lower than premium
• Warranty: 10 years parts
• Best for: Value-focused buyers with solid contractor support

Budget Tier (Comfort-Aire, Aire-Flo):

• Cost: 25–35% lower than premium
• Warranty: 5–10 years parts
• Best for: Rental properties or short-term ownership

Note: Brand performance varies significantly based on installation quality and ongoing maintenance. Even premium brands underperform when improperly installed.

Not sure which tier fits your situation? Take our furnace recommendation quiz for a personalized Entry / Mid / High-End suggestion.

Single-Stage vs. Two-Stage vs. Modulating

• Single-Stage: Runs at full capacity only; least expensive ($2,500–$4,000)
• Two-Stage: Offers low and high heating modes; better efficiency and comfort ($3,500–$5,500)
• Modulating (Variable Speed): Adjusts output incrementally; maximum comfort and efficiency ($5,000–$7,500+)

For homeowners who prioritize quiet, even heat, modulating furnaces are the top-tier choice — they deliver the most consistent temperature control and operate 30–40% more quietly than single-stage units.

Smart & IoT-Enabled Furnaces: Is a Connected System Worth It?

Modern furnaces increasingly ship with, or support, Wi-Fi-connected controls that go beyond a basic programmable thermostat.

What "smart-enabled" actually means for a furnace:

• App-based diagnostics: Many modulating and two-stage furnaces from Carrier, Lennox, and Trane now report fault codes and maintenance alerts directly to a contractor or homeowner app, catching problems before a mid-winter breakdown.
• Smart thermostat integration: Pairing a furnace with an ecobee or Nest-style thermostat allows learning schedules, geofencing, and room sensors — see our smart thermostat buying guide for a full model comparison.
• Remote monitoring for rental/seasonal properties: For cottage owners or landlords, connected furnaces can send low-temperature alerts remotely, reducing frozen-pipe risk during vacancies — a genuinely Ontario-relevant use case given the province's seasonal-property market.

Cost and Value: Is Smart Furnace Tech Worth It?

Does it add to the cost? Smart-capable furnace models typically run 5–10% above a comparable non-connected unit of the same AFUE rating. A separate smart thermostat adds $200–$500 installed, but is often the more cost-effective entry point if you're not replacing the furnace itself yet. check our best smart thermostats in Canada roundup for top-rated options.

Is it worth it? For most homeowners, a smart thermostat delivers the bulk of the savings and convenience — typically 10–15% lower heating costs through better scheduling — without needing a fully IoT-native furnace. Full smart-diagnostic furnaces are most worth the premium for larger homes, rental properties, or anyone who wants remote fault alerts before a failure becomes an emergency.

Common Mistakes When Buying a Furnace in Ontario

Repair or Replace? Use This Quick Rule

A commonly used HVAC industry rule of thumb: multiply the repair cost by the furnace's age in years. Try our repair-or-replace quiz for a scored recommendation based on your specific furnace. If the result exceeds roughly $5,000, replacement is typically the smarter long-term investment. A 15-year-old furnace needing a $400 repair (15 × $400 = $6,000) is a strong replacement candidate; a 3-year-old furnace needing the same $400 repair (3 × $400 = $1,200) is worth fixing.

Choosing the Wrong Size

Contractors sometimes oversize furnaces, assuming "bigger is better." Oversized units cycle on and off frequently, wasting energy and shortening lifespan by 3–5 years. Always request a Manual J heat load calculation before installation.

Avoid This Common Installer Upsell: If a contractor recommends a furnace size without measuring your home, calculating heat loss, or reviewing insulation—get a second opinion.

Ignoring Rebates

Failing to research available rebates can cost you $1,000–$2,500. Apply for incentives before installation begins—most programs require pre-approval or enrollment.

Don't Overlook Financing

Many Ontario HVAC contractors and lenders offer 0%–interest financing plans for furnace replacement, often spreading the cost over 12–60 months — see our furnace financing guide for how these plans typically work. Financing can make a high-efficiency unit accessible even when the rebate hasn't been claimed yet — just confirm whether the plan requires a lien on your home (common with some third-party HVAC financing companies) before signing.

Skipping Contractor Comparison

Accepting the first quote without comparing at least three licensed TSSA-certified contractors often results in overpaying by 15–25%. Verify contractor credentials, online reviews, and warranty terms.

Focusing Only on Upfront Cost

The cheapest furnace rarely delivers the best value. A $3,000 furnace with $1,800 annual heating bills costs more over 10 years than a $5,500 high-efficiency model with $1,100 annual bills. Run your own numbers with our savings calculator to see the real 10-year difference.

Not Reviewing What a Fair Quote Should Include

Quality furnace quotes in Ontario should detail:

• Exact furnace model and AFUE rating
• Complete labor breakdown
• Ductwork modifications (if needed)
• Permit and inspection fees
• Removal and disposal of old equipment
• Warranty coverage (parts and labor)
• Rebate application assistance

If a quote lacks these details, it's incomplete.

Frequently Asked Questions

City-Specific Pricing Considerations

Toronto & GTA

Higher labor costs and stricter permit requirements often add $300–$800 to installation. Older homes in established neighborhoods (The Beaches, High Park, Leslieville) may require additional ductwork modifications.

If you're near Milton or Oakville, see our dedicated Furnace Prices in Milton, Ontario guide for a closer look at new-build vs. older-home cost differences in that market.

Ottawa

Colder climate than southern Ontario means sizing calculations require 10–15% higher capacity. Rural Ottawa properties may face premium charges for service calls.

Hamilton

Mix of older and newer housing stock. Homes built pre-1980 often need extensive duct sealing and insulation upgrades before high-efficiency furnace installation delivers optimal performance.

For a full local breakdown, check out our Furnace Prices in Hamilton guide.

Smaller Communities

London, Kingston, Kitchener-Waterloo typically see pricing 5–10% below GTA rates, though contractor availability may be more limited during peak season.

Homeowners in the Kitchener-Waterloo region can find exact local pricing in our Furnace Prices in Kitchener and Furnace Prices in Cambridge, ON guides.

Conclusion: Make an Informed Furnace Investment

Navigating furnace prices in Ontario doesn't have to be overwhelming. By understanding the cost factors—fuel type, efficiency, installation complexity, and available rebates—you can confidently plan your replacement budget. Remember that the cheapest option isn't always the best value. Investing in a properly-sized, high-efficiency furnace installed by TSSA-certified professionals will deliver comfort, savings, and reliability for 15–20 years.

Ready to get started? Compare local contractor quotes to find the best furnace prices in Ontario for your home. The pricing ranges in this guide reflect current market rates from licensed, TSSA-certified HVAC contractors operating across the GTA and major Ontario cities, cross-checked against manufacturer pricing and industry benchmarks. Request detailed estimates that include equipment specifications, installation costs, rebate eligibility, and heat load calculations — and choose a contractor who prioritizes your long-term comfort and savings, not just a quick sale.

Get a personalized estimate with our furnace cost calculator before you request quotes.

What to Do Next

If you're planning ahead:

1. Get 3–5 quotes from TSSA-certified Ontario contractors
2. Verify rebate eligibility before signing any contract
3. Request Manual J calculations to confirm proper sizing
4. Compare total cost of ownership, not just installation price
5. Schedule installation during off-peak season if possible (April–September)

If your furnace failed unexpectedly: First, ensure your family is safe and has temporary heat. Once stabilized, use this guide to evaluate emergency quotes fairly—even urgent replacements deserve fair pricing and proper sizing.

Your comfort during Ontario winters is too important to leave to guesswork. Make an informed decision with real data, professional guidance, and fair pricing.

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Ontario Cities We Commonly Serve

FurnacePrices.com helps homeowners across Ontario compare heating and cooling systems, estimate installation costs, and connect with trustworthy contractors. Frequently supported service areas include:

• Hamilton
• Burlington
• Brantford
• Cambridge
• Kitchener
• Milton
• Oakville

Our network covers most major and mid-sized regions in Ontario, whether you're replacing an older furnace/AC or upgrading to a high-efficiency model. 👉 See the full list of Ontario service regions

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Many companies in our contractor network are active members of respected national and provincial HVAC organizations, including the Mechanical Contractors Association of Canada, Canadian Institute of Plumbing & Heating, Thermal Environmental Comfort Association, and Heating, Refrigeration and Air Conditioning Institute of Canada. These affiliations reflect strong training standards, code compliance, and reliable installation practices.

What Affects Furnace & AC Installation Pricing in Ontario?

Installation costs vary depending on home size and heating/cooling load — larger homes require higher-BTU furnaces or higher-tonnage AC units — as well as installation complexity (venting, ductwork, gas lines, and electrical upgrades), brand and efficiency level, regional labour rates, and whether you need a repair or a full system replacement. Understanding these factors helps you plan your installation budget more accurately.

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